Parents Gift?

I got married in April and for the parents gift i got a frame with 3 openings in it. I put a big 5x7 in the middle of my hubby and i right now, on one side i put a pic of me when i was 7 and on the other side i put a pic of my hubby when he was 7. Anyway, my sister in law (hubbys sista) is getting married in Oct and wants to give a unique gift like mine but doesn’t want to do the same thing..... any ideas out there for something that isn’t the normal gift for parents?